Floor construction



A. G. HATCH.

FLOOR cousmucnou.

AFPUCATION FILED JAN. 31, 1921 1,41 5,554. Patented May 9. 1922.

2 SHEETSSHEET A. G. HATCH. noon consmucnoui mucmon mm mm. 1921.

Patented May 9, 1922. A

2 SHEETS SHEET 2.

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ARTHUR G. HATCH, 0F DULUTH, MINNESOTA.

FLO 0R CONSTRUCTION.

Application filedianuary 31, 1921.

To all whom it may concern Be it known that I, ARTHUR G. HATCH, a citizen of the United States, residing at Duluth, in the county of St. Louis and State of Minnesota, have invented certain new and useful Improvements in Floor Constructions, of which the following is a specilication.

This invention relates to a new and improved method and means for constructing floors of concrete or like material.

In the construction of concrete floors by methods heretofore in general use, the floors have been carried by forms supported upon columns carried by a lower floor. This construction entails the use of a large amount of form and blocking material and involves considerable obstruction to the work. It further renders necessary different lengths of column for each height of room and renders diflicultthe use of standardized elements.

It is an object of the present invention to provide concrete floor forms and form supporting means which are adapted to be supported upon the walls to be spanned by the 'fioor.

It is a further object to provide supporting means consisting of a collapsible truss structure which may be quickly and easily put in place or removed.

' It is an additional object to provide se tional forms which may be readily removed after the completion of the work and used repeatedly.

In a pecific embodiment my invention comprises a simple truss structure having certain of its joints pivoted and having its elements detachable at certain points whereby it may be readily collapsed. It further comprises forms adapted for use with these trusses the forms gomprising a plurality of sections. the end sections being provided with curved end portions. thus permitting ready removal.

I have illustrated a preferred embodiment of my invention in the accompanying drawings, in' Which-- Figure 1 is an elevation showing my truss assembled Specification of Letters Patent.

Patented May 9, 1922.

Serial in). 441,202.

Figure 2 is a plan view of my concrete forms;

Figure 3 is a. section on line 3-3 of Fig ure 2;

Figure 4 is a fragmentary view illustrat ing one of the upper ends of the truss;

Figure 5 is a section on line 5-5 of Figure 4; and

Figure 6 is a fragmentary view illustrating the lower truss joint.

Referring to Figure 1, the truss comprises the upper compression member 7, the lower tension member 8, and the transverse compression member'9. The member 7 comprises two sections 10, each provided with connection plates ll the plates on the two sections overlapping at the middle point of the member and being connected by the cross pin 12. The transverse member 9 has its upper portion fitted upon the pin 12 intermediate the plates 11. Its lower portion, as best shown in Figure 6, is provided with the cap 13 and the longitudinally movable pin 14. This pin 14 is rovided with a head 15, which prevents its di'opping through the opening in the cap 13. The cross rivet 16 passes through the member 9 and prevents the pin from slipping up into the member beyond a. predetermined point. The tension member 8 consists of two sections, each of which i provided with an eye upon its end overlapping the eye of the other section, the

eyes 17 fitting aboutthe pin '14. The sections of the member 8 are further provided with adjusting turnbuckles 18.

As best shown in Figures 4c and 5, the sections 10 of the upper compression member 7 comprise spaced beams which have their ends secured to the channel member 19 by the screws 20, the channel members serving to retain them in spaced relation. The bolt 21 is passed through the channel member 19 intermediate the members 10. The upper end of each member 8--is provided with an eye 22 encircling its securing bolt 21. The outer face of the channel member 19 has the supporting hook members 24 riveted thereto adjacent its ends. The upper surface of the members 10 carries the form supporting plate 25. As shown in Figure 4, the adjawith its end hooks cent edges '2? of the forms are 5e; irsterl by attaching ceilings or other elements.

As shown in Figures 2 and 3, the forms consist of 11. plurality of elements, the central elements 26 being U-shsped in cross seoii z with ouhturnerl edge flanges and being open at the ends. The ends of iliese members 26 are depressed at 28 an amountequel to the thickness of the maieriai in order to receive the ends 29 of the end form elements The outer end of the end elemenis 30 are formed upon the are of circle the of the circle being preferably leeeied epproximetely in the lower plane of he forms In the use of my forms, the is. pieeeifi 2% upon the walls whic are to slipper- 5 the floor The truss issemhlecl by passing the pin 12 through me plates 11 to connect the two peril-ens coinggression member, ihe member 9 being also carried by the pin. The eyes the 95% tions oi the tension member 8 are then piece about the pin 14 and. the turnhuelzles l8 tightened up to remie the truss rigid and bring the upper compression member the horizontal. The forms are then plan in the manner best shown iii Figures 2, and 5, so that their later: 1 edges rest upon the top plate 25 0"? the truss upger member fine to the overlap of the fouls, as shown in Figure 3, the under surfaee of the conereie floor is smooth. The concrete heing poureil upon the upper surface of the "forms, forms a cross beam above each truss zit Whieh point the floor is most strongly supporied by fihe forms, and lighter connecting floor are formed above the cen rsi portions of she form sections.

After the fioor has set is eollapsed by loosening fehe turnhiiekles l8 slightly and driving the pin newer "iy into the member The pin 12 is then (lreiin downwardly by the member 9, the up COIHPI'QSSiOD member pivoting about pin and freeing the hooks 2 from the wall, "il'ie central-for ii are then "looped ilmvnwardly being unsupported, end form members may be pivotel their point of contact with the ecl 2 well. as indieaced in il l, and then remors 7 Obviously"; niylorms and form supporting construction may he used repeatedly. "ilfhile 1 have shown :1 simple it quiie of vioiis that any form of truss lCROWZi to the .art may he used, the inveniien as fer as the truss itself is concerned.involving the pivoting of certain truss members and new (lering certain truss corners easily illSCOR' nected so that the truss mev be readily collapsed. The forms he in desired width to give any preferred Width of floor slab, and, ilesirezh the eeljeceni;

eilges of forms supporiecl upon i may overlap. My eoliepsiole truss adepieil or use in siipporiing ereie iorms, truss comprising long-i hielinel and transverse eoinpression members soil e longitul'nel tension member, the tension member comprising: seciions peovided iii] their ecljzieen'b ends with 2i pin earrieii hy a transverse member, the pin being movable relative "so he irens'verse member to bring it into or out or eneegenizerit with the eyes .i the tension see'sions.

A adapted for use is supporting eenoi'eie forms, comprising iong iiiclinel compression member consisting of two seetions pivo'ially eonneeies hy pivot member, :1 transverse compression eiement having one end pivot .1137 connected to ssirl pivot, and longiiiulinel tension seeiions having" their adjacent encls seperehly connected to the compression element.

3. r truss adapted for use in eiipigorting concrete forms, comprising a longitudinal eoinpr ion member consisting; of two sections p 'otzill connected by a iivoi; member, a transverse compression elemen jhaving one end pivotzilly connected in said pivot, snol longitudinal lension sections having their adjacent eniis provided with eyes ted to engage :1 pin ed iiisiehl extending from the transverse eompre 'on elemeni z.

4. truss adapted ior use in supporting; concrete forms, comprising a longitudinal coni iifession element consisting of two sec-- i ions ach formed oi" two parallel spaeed ineinoe s1 the eclje 7 ends of the sections ieterliiiieg end being plYOiZiiiy sensesl ed a transverse pin. a ereneveirse eoriipressioii member having an eye engaging the transverse pin, a pin mljiisteiii eerriecl by the o posi'se eed of the transverse element sectional tension member the sections 1g eyes adapted to emerge the pin eerrierl by the transverse member.

A iruss adopted for use in supporting conere ze forms, truss oonigc-ri ng long'- ii and transverse comer ion mem- 2'1 longitudinal te sion iiiemher, the tension member comprising sections pro vieci eti-heii; scent ends with zitlep eel to fit against ihe end of ii transverse .i'einber slid pin carried by the mensverse 12161 11 061} the pin being movable longitudinally of the inember'izobi'ing is infio or out oi engagement with the eyes of file tension sections.

6. collapsible truss adapted for use in \ipporting coneeie forms, the eriiss comprising longitudinal and irensverse combeing movable longitudinally of the member to bring it into or out 0f engagement with the eyes of the tension sectiens.

Signed at Duluth, Minneso ba, this 2% day of January,

ARTHUR G. HATCH. 

